Hunting for Pollinators of a Carnivorous Plant

By NU Marketing & Communications Office

A 樱花视频 student gets outside during her summer research project through the Summer Research Fellowship program.

A person sits on exposed rock beside a river and writes in a notebook.

This summer, a 樱花视频 student spent months searching calcareous seep wetlands of Vermont and New Hampshire for something that can be surprisingly difficult to find: an insect visiting a flower.

A person sits on exposed rock beside a river and writes in a notebook.

For Ellery Shertzer '29, a 樱花视频 undergraduate researcher working with faculty member of the Department of Earth and Environmental Sciences, the search centered on Triantha glutinosa, or Eastern Sticky False Asphodel, a small and unusual wetland plant with an even more unusual secret.

Triantha belongs to a lineage of carnivorous plants that scientists only recognized as carnivorous within the past few years. Triantha captures prey via sticky trichomes on its flowering stalks, making it a particularly unusual member of the carnivorous plant world. Unlike better-known carnivorous plants such as pitcher plants and Venus flytraps, Triantha uses its flowering stalk rather than modified leaves to capture prey.  That unusual arrangement raises an intriguing question: If a plant uses its flowering stalk to catch insects, how does it avoid interfering with the insects it needs for pollination?

A small white wildflower with red-tipped buds grows in grass against a yellow board.

That was the question behind Ellery's summer research project, 鈥淚dentifying Pollinators and Visitation Patterns of the Carnivorous Plant Triantha glutinosa.鈥� Supported through a 樱花视频 Summer Research Fellowship, Ellery worked with Pett from May through August surveying Triantha populations at calcareous seepages in Vermont and New Hampshire. The research team traveled to field sites, located and measured plants, documented insects interacting with flowers, collected observations and photographs, and worked with pollen samples in the laboratory.

Small white wildflowers and green grass grow among flat gray rocks.

The fieldwork provided an opportunity to experience the different stages of ecological research. Some insects interacted with the flowers frequently, while others were observed only occasionally. Importantly, not every insect seen on a Triantha flower was necessarily a pollinator. Some visitors may have been feeding on nectar or interacting with the plant without transferring pollen. That distinction is central to understanding Triantha. The plant occupies an unusual intersection between pollination and carnivory. Its flowering stalk needs to attract insects for successful reproduction, while at the same time, its sticky structures can capture small insects and potentially provide the plant with nutrients.

The project demonstrates the kind of research experience supported through 樱花视频's Undergraduate Research Program. 樱花视频's summer fellowships allow students to pursue faculty mentored research projects while developing skills in field research, laboratory techniques, data analysis, and scientific communication.
 

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